(1. 北京科技大學 材料學系 新金屬材料國家重點實驗室，北京 100083;
2. 西南鋁業(yè)(集團)公司 技術(shù)質(zhì)量部, 重慶 401326)
摘 要: 采用X射線衍射法研究一種快速而準確地測定3104沖壓鋁板塑性應變比r值的技術(shù)。 根據(jù)鋁板的織構(gòu)組分和極圖的對稱性可以大幅度地減少極圖數(shù)據(jù)的檢測量， 利用X射線面探測可以快速記錄所需織構(gòu)組分的關鍵數(shù)據(jù)， 進而計算出正態(tài)分布各織構(gòu)組分的體積分數(shù)。 利用初始單系滑移模型和{123}〈634〉織構(gòu)組分體積分數(shù)可以快速而準確地計算出3104鋁合金板的應變比(r)值， 并兼顧到非織構(gòu)因素的影響。
關鍵字: 沖壓鋁板； 織構(gòu)； 塑性應變比r值； 在線檢測
CHEN Chang-yun2, LI Ji-bin2
（1. State Key Laboratory for Advanced Metals and Materials, Department of Materials, University of Science and Technology Beijing, Beijing 100083, China;
2. Department for Technology and Quality, Southwest Aluminum (Group) Co. Ltd., Chongqing 401326, China）
Abstract: A rapid and accurate determination technology on Lankford parameter r of deep drawing 3104 aluminum sheets was investigated. The amount of pole figure data measured reduced drastically because of the pole figure symmetry. The necessary pole figure data were collected fleetly by the X-ray area detectors, the volume fraction of the texture components in Gaussian forms were obtained. According to the volume fraction of the {123}〈634〉 texture, the r value of the 3104 aluminum sheets was calculated rapidly and accurately based on the initial single slip model, while some other effect factors beside texture were also included.
Key words: deep drawing aluminum sheet; texture; Lankford r value; on-line determination
